When it comes to sound, there are two main types: mono and stereo. Mono sound is when only one channel is used to convert a signal into a sound, while stereo sound is when several channels are used to convert several signals into sounds. The difference between mono and stereo lies in the number of channels they send to the speakers. Stereo sound (or stereophonic sound) is the reproduction of sound using two or more independent audio channels in a way that creates the impression that sound is heard from several directions, as in natural hearing.
Mono (monaural or monophonic sound reproduction) has single-channel audio, often focused on the “sound field”. Mono sound is preferred in radiotelephony communications, telephone networks and radio stations dedicated to talk shows and conversations, PA systems and headphones. Stereo sound is preferred for listening to music in theaters, radio stations dedicated to music, FM broadcasts and digital audio broadcasting (DAB). Mono sound recording is done primarily with a microphone, and only one speaker is required to hear the sound.
In the case of headphones and multiple speakers, the routes are mixed into a single signal path and transmitted. The signal does not contain level, arrival time or phase information that can replicate or simulate directional signals. Everyone hears the same signal and with the same level of sound. Stereo recording is done with two or more special microphones.
The stereo effect is achieved by carefully positioning the microphone that receives different levels of sound pressure, so even the speakers must have the ability to produce the stereo and must also be positioned with care. The signals have a specific level and phase relationship with each other, so that, when reproduced through an appropriate reproduction system, there will be an apparent image of the original sound source. It's expensive and requires the ability to record stereo sound. There are several stereo recording methods: this video provides an explanation of some of the differences between mono and stereo sound, as well as how to record stereo sound.
As a listener, the most notable difference between mono and stereo audio is that stereo sounds are capable of producing the perception of width, while mono sounds are not. In this scenario, you might want to switch to mono audio to bring all audio layers to the foreground, regardless of which audio channel they play on. Since stereo audio offers more immersive listening and is simply more appealing to the ears, most people choose it instead of mono. The Steve Hoffman poll favors the release in mono, but there are convincing justifications for liking any of the versions on the forum.
An engineer could take a mono recording (let's hope it's from the master tape) and set up two equalizers to divide the audio on the left and right speakers. We explain the differences between mono and stereo audio and discuss which type is best for recording and reproducing. One way to find out if you're hearing a difference between switching from mono to stereo is to open an audio file in a program like Audacity to check if it has two waveforms (stereo) or just one (mono). The following Steven Law video contains a consecutive comparison of a mono guitar recording and a stereo guitar recording.
Hear the differences between the mono and stereo versions of Lucy In The Sky With Diamonds from The Beatles' seminal 1967 album, Sgt. This is done by recording the main elements of a track, such as the main instruments and the vocals, in mono and other supporting elements in stereo. In conclusion, if you're looking for an immersive listening experience or simply want something more appealing to your ears, then you should opt for stereo audio over mono audio.